/*
 * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package com.sun.corba.se.impl.protocol.giopmsgheaders;

import com.sun.corba.se.spi.ior.iiop.GIOPVersion;

/**
 * This implements the GIOP 1.2 Fragment header.
 *
 * @author Ram Jeyaraman 05/14/2000
 */

public final class FragmentMessage_1_2 extends Message_1_2
    implements FragmentMessage {

  // Constructors

  FragmentMessage_1_2() {
  }

  // This is currently never called.
  FragmentMessage_1_2(int _request_id) {
    super(Message.GIOPBigMagic, GIOPVersion.V1_2, FLAG_NO_FRAG_BIG_ENDIAN,
        Message.GIOPFragment, 0);
    this.message_type = GIOPFragment;
    request_id = _request_id;
  }

  FragmentMessage_1_2(Message_1_1 msg12) {
    this.magic = msg12.magic;
    this.GIOP_version = msg12.GIOP_version;
    this.flags = msg12.flags;
    this.message_type = GIOPFragment;
    this.message_size = 0;

    switch (msg12.message_type) {
      case GIOPRequest:
        this.request_id = ((RequestMessage) msg12).getRequestId();
        break;
      case GIOPReply:
        this.request_id = ((ReplyMessage) msg12).getRequestId();
        break;
      case GIOPLocateRequest:
        this.request_id = ((LocateRequestMessage) msg12).getRequestId();
        break;
      case GIOPLocateReply:
        this.request_id = ((LocateReplyMessage) msg12).getRequestId();
        break;
      case GIOPFragment:
        this.request_id = ((FragmentMessage) msg12).getRequestId();
        break;
    }
  }

  // Accessor methods

  public int getRequestId() {
    return this.request_id;
  }

  public int getHeaderLength() {
    return GIOPMessageHeaderLength + 4;
  }

  // IO methods

  /* This will never be called, since we do not currently read the
   * request_id from an CDRInputStream. Instead we use the
   * readGIOP_1_2_requestId to read the requestId from a byte buffer.
   */
  public void read(org.omg.CORBA.portable.InputStream istream) {
    super.read(istream);
    this.request_id = istream.read_ulong();
  }

  public void write(org.omg.CORBA.portable.OutputStream ostream) {
    super.write(ostream);
    ostream.write_ulong(this.request_id);
  }

  public void callback(MessageHandler handler)
      throws java.io.IOException {
    handler.handleInput(this);
  }
} // class FragmentMessage_1_2
